Process for dyeing with dyestuffs or dyestuffs-producing bodies insoluble or sparingly soluble in water



v 2 products,

al-three a a 7,1925.

UNETE TA FEET FERDINAND M'fi'NZ, 0F FECHENHEIM-ON-THEMAIN, GERMANY, ASSIGNQB- TO LEO EOLD CASSELLA & 00., GESELLSCHAF'I. MIT BESCHBANKTER HAFTUNG, A 003-,

sonarion or GERMANY.

PROCESS FOR Drums WITH nyns'rcrrs on DYESTUFFS-ERODUCING Booms INSOLUBLE OB SPARINGLY SOLUBLE IN WATER.

HaDrawing. Application filed September To all whom it may concern:

Be it known that I, FERDINAND MijNz, a citizen of the Austrian Republic, residing at Fechenheim-on-the-Main, Germany, have 55 invented a Process for Dyeing with Dyestuffs or Dyestuff-Producing Bodies Insoluble or sparingly Soluble in Water, of which the following is a full description.

Numerous dyestuffs and dyestuif-producing bodies hitherto could not be employed for dyeing the various fibres, because their insufficient solubility presented an obstacle.

It has now been found, that a great number of these bodies can be made suitable for 1 dyeing when mixed with organic solvents and soaps, by means of which a sufficient solubility, allowing them to be dyed in an aqueous bath is attained.

Ordinary soaps, as well as sulfonated Turkey-red oils, monosolvol and the like may be employed, as organic solvents benzene and its homologues, hydrated carbohydrates, chlorocarbohydrates and similar bodies, as

Z dissolving action on the respective dyestuffs and dyestuif-producing bodies insoluble in water. A slight addition of alkalies as soda and ammonia enhances the solubility of the respective .products' The carrying into execution and .application of the process is explained by the following examples I Emamplel. I 2% dimethylamidoazobenzene, 4% Turkey-red oil, 4% solvent naphtha, 0.4% soda, of the weight of the silk to be dyed are far as they exercise a 3,1924. Serial No. #35596.

boiled up with -50 times the quantity of water and added .to. the dyebath heated to e0-s5 'o. (176-185 F.), in which the silk is" treated for about hour; the bath is FFICE.

well exhausted, and a clear yellowobtained. 1 i

- Example Acetate silk i s' dyed with 3% of the dye.-

stufl derived fromo-aniSidine-alphanaphthylamine, 8%. common curd soap, 5%

line, 1.5% soda as indicated in'example '1, however at a. temperature of (SO-65 C. (MO-149 F.), developedwith 2.3-oxynaphthoic acid. A deep black is obtained.

Etvample 5. I

i The acetate silk is treated with 0.5%

dianisidine, 2% soap, 1.5% -tetra1ine,-0.5

soda, as indicated in example 2, likewlse 'diazotized' on the fibre, and.

tetradiazotlzed on the fibre, and developed with- 2.3-ox'ynaphth0ic acid. A clear blue is ob-" tained. p

The great variety of insoluble azo dye-- stuffs and components. of same, as well as other insoluble products may be employed in an analogous manner.

Claim A process of dyeing with dyestuffs and dyestuff-prod'ucing bodies insoluble or spar-- ingly soluble in water, by applying them together' with organic solvents not miscible with water and soaps in an aqueous bath.

In witness whereof I have hereunto signed my name this QOth-day of August 1924.

- FERDINAND MUNZ- 

